Invalidity dossier
US 7457630
Added 9/23/2026, 1:31:02 PM
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Patent summary
Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.
Patent Overview — US 7,457,630 B2
Title: Data boundary aware base station assisted position location
Patent number: US7457630B2
Assignee: Qualcomm Inc (current and original assignee; the source notes listed assignees may be inaccurate and that Google performed no legal analysis)
Inventors: Qiuzhen Zou, Gilbert C. Sih, Inyup Kang
Key dates: Priority date 1998-09-09 (stated as an assumption, not a legal conclusion); application US09/956,325 filed 2001-09-18; published as US20020031192A1 on 2002-03-14; granted 2008-11-25. Status: Expired – Fee Related, adjusted expiration 2019-11-02 (legal status is an assumption and not a legal conclusion).
Field/classifications: Radio direction-finding and radio navigation (G01S5/00, G01S5/0036); satellite radio beacon positioning (G01S19/00), including assisted GPS (G01S19/25), satellite-constellation aiding data (G01S19/258), code-related acquisition (G01S19/30), and long acquisition integration times and weak-signal acquisition (G01S19/246).
Purpose: To provide GPS functionality in a cellular telephone system with minimal additional hardware, cost, and power consumption, and to perform position location in a wireless communications system.
Plain-language scope (per the supplied text): One embodiment is a method for position location on a subscriber unit in a terrestrial wireless telephone system using satellites that each transmit a signal, where base stations transmit an aiding message containing data-boundary information for each satellite signal. The unit applies correlation codes to each signal to produce correlation data, and accumulates that data over a first interval preceding a corresponding data boundary and a second interval following it, yielding first and second accumulation results. The excerpt references figures covering a GPS waveform generator, a cellular system, receiver block diagrams, an alternative receiver, a position-location flowchart, a DSP, search flowcharts, search timelines, a search-space diagram, and another receiver embodiment.
What the excerpt does not establish: It does not include the full claims, complete description, detailed embodiments, prosecution history, or the substance of any prior art. It provides no findings on validity, infringement, enforceability, or ownership transfers, and none are offered here. The listing also appears to be excerpted (noted: "[Excerpt only; consult the source for omitted text.]"), so details beyond what is quoted cannot be confirmed from it.
Generated 10/1/2026, 9:53:05 PM
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Litigation summary
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PTAB challenges
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Assignment history
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Prior art
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Obviousness
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Extensions
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Derivative works
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